Solenoid valve module with the central heating pump control

The actuator elements are semiconductor elements, thanks to which the devices have high durability (no mechanical elements - relays). In addition, the eighth actuator channel controls the central heating pump as follows: if at least one solenoid valve is switched on (open), the pump is also switched on. This function prevents the pump from running with all solenoid valves closed, which protects it from damage. The module is supplied with 230 V voltage. If it is required to control a larger number of heating circuits, additional modules of subsequent levels should be used, bearing in mind that the sensor modules of the same level should also be used (for example, S8-1 and V7+-1 or S8-2 and V7+-2). The selection of solenoid valves is very important. It is important that the coils are supplied with 230 V.